Machine for stringing bags.



I PATENTED MAR. 20, 1906. J. L; LOWE & J. 0; HIBBARD. MACHINE FOR STRINGING BAGS.

WrrmaZEs 2w? No.-815,606. PATENTED MAR. 20,1906.

JL LOWE & J. 0. HIBBARD.

MACHINE FOR STRINGING BAGS.

APPLICATION FILED MAY 26, 1904.

4 SHEETS-SHEET 2.

No. 815,606. v I PATEN'IED MAR. 2"0', 1906.

J. L. LOWE & J. 0. HIBBARD. MACHINE FOR STRINGING BAGS.

APPLICATION FILED MAY 26, 1904.

4 sums-sum s.

INVEHTOIZS -dAME5-L.- LOWE- "JOHN "O H/BBABD' Wrmassas.

ATT'Y.

PATENTED MAR. 20, 1906. J. L. LOWE & J. 0. HIBBARD. MACHINE FOR STRING-INC: BAGS.

APPLICATION I'ILED MAY 26; 1904.

4 SHEETS-SHEET 4.

wwmassizs taunt smrnsrinrnm orrioa JAMESL. LOWE AND Joinio. HIBBARD, or DETROIT, MIOHIGAN.- v

MACHINE FOR STRINGING BAGS.

To all] whom it may concern: 4 v

' Be it known that we, JAMES L. LOWE and JOHN O. HIBBARfi, citizens of the United States, residing at Detroit, in the county of Wayne and State of Michigan, have invented certain new and useful Improvements in Machines for Stringing Bags, of which the following is a specification, reference beinghad therein'to the accompanying drawings.

The invention re ates to machines for stringing bags, and has forits object the at- ,taini'ng of a stringing-machine in whlch the work is accomplished automatically and expeditiously. e

The invention consists in the means 'employed for sup needles; furt er, in the construction -by which the length of strings supplied ma be bag-turning mechanismby which the bags arereversed, and, further, in the peculiar 0 construction, arran ement, and combinationable; hia i lala l l n. n which a hem or looplsprbvided'at the mouth adjusted according to therequlrements o the work; further, in the eculiar' construction of the strin -needle and its cooperating parts; further, 111' the construction by which the ba s are strung while reversed or in the'condition in which they are'receivedfrom the bag- -forming'machine and; subsequently to the stringing are automatically reversed further, in the peculiar constructionof the of arts, as hereina ter'set forth.

n thedrawings, .Figure 1 is a sectional :end elevation of the machine. Fig. '2 is'a longi-.

'tudinal section ther'ethrough. 31 Fig.. 3 is a' planyiewrfFigs. 4 and .5 are perspective views, resp'ectively,.of the needle-guide and string-cutters Fig. 6 is a section illustrating the string-grabbing device,

v ti n reof Fig-B; s a stat on S m r. es after .inser-Q an f enlarged .1

theneedl tween plies. .Fig. l0.

to 7,; illustrating tiori e The. bagshp nQWh h the. signed-to o eratem be f0 of the bag between the plies of which the string may be inserted. The bags arepreflying thestrings to 'the string' Fig. 7 is a hori'- zontal sect on through the bag-holder," ill'use tratin'g the string needles in positions for; piercing the outer plyjof the .bag, Fig. 8 isan ,[from the shank yto; neartheg-point. r g [is 3 ed of suit- 1" tri'lct on in 'thereof beingslightl separated from each other and having ob this construction bein for a will he hereinafter set orth.

posits sides of the plane of the holder These needles are preferably secured to the commoncarrler D,. wh1ch, as shown, cons sts bearings needles C an Cis of a construction to coeperate with the holder-A, so-that in o a only of. the baglan'd .wi two plies apart toprevent same by the struction consists, essentially,-

and before piercing the inner plywillabefdee :flected by said angular face} so as to separate theplies.

* are formed of triangularcrosssections,rwltic in the largest p ortion d are larger than th "si'de of the. trlangle "is arranged in..-a :vertic plane; and extends substantially. straigh r undedtre s-se ues; so'tl a 7' g 1n engagement sa1 older. is -drawn ,Iaround' saidrounded bar. The ne'edle's and;

outer ply of theportion of the bagdrawn saten ed march 20, 1906.

the machine adapted I 8o eration theneedles will ierce the-outer p 1y thenseparate the the piercing of the Af oint of the needle until the-'opi,.=--- posite end 0 the "bag is reached. This "conshownfthe; forward: aid Bf seating shank e and jtafp'er to the point The inner;

' bevtledi' s ex ndin fr m the forward the face athe eietf- ;-Th l1older.-' Alias vertical rodlz thereof .erably bifurcate the furcations b and b.

que corner portions '0,

purpose that C and Care the stringing-needles, which; r are arranged parallel to each other and on 02- .in a'reciparocatory-bar slidingly secured-in Y u onfthe table Each of the in a tapering' I 1 1 needle-point having a beveled inner face the 5 3 .angularity-ofwhich is such that the point I will enter and pierce the outer plyo'f the bag .90-

/ i. l v M i C are so adw'sted m'relatlon to the rounded bar h that the'points f will readily pierce the around said bar. Inasmuch, however, as the needles are traveling obliquely in relation to the surface at the point of piercing before the outer ply is penetrated by the point, the movement of the needle around the rounded bar will cause the inner ply to bear against the oblique face 9 of the needle and hold the point f from piercing it. In the further forward movement of the needle said oblique face 9 will cause the point'to be deflected laterally, thereby carryin the outer ply away from the inner ply and a so separating the point f from both outer and inner plies. As a result the needles are formed to travel the entire length of the holder without danger of the points piercing the cloth until the rounded opposite edge is reached, where the outer ply is again pierced by the point of the needle- From the description above given it will be understood that the needles automatically [pierce and separate the plies without the necessity of any auxiliary piercin or ply-separating device such as has hereto ore been used in machines of this character. Where the needles are accurately adjusted in position, the operation will be positive and uniform, and to rovide for this accurate adjustment we pre erfably employ in the path of the needles oppositely-disposed spring-guides F, mounted upon suitable supports F, the free ends of the springs being adjustable through the medium of adjusting-screws F, passing through 'serrated disks j and j said supports and loosely engaging said free ends, by means of which the needles 0 and C may be adjusted in relation to the bar it of the frame.

In rear of the triangular portion (1 of the needle is arranged an eye 'L, through which the string must be inserted. This being a closed eye, alldanger of catching in the cloth of the bag is prevented; but the construction necessitates a string-sup lying mechanism which is capable of threading the string through the eyes of the needle at each operation. For

this purpose we have rovided an automatic threader, preferably 0 the following construction: G is a threadirig-needle which is capable of insertion through the needles 0 or C. This needle G is itself provided with an e e through which the strlng is passed and .y which it is carried through the eyes 'i of the needles C and C. The needle is carried by reciprocatory arm H, which, as shown, is mounted on a rock-shaft H. I is a. corresponding reciprocatory arm, which is mounted upon the parallel rock-shaft I and carries at its free end a grabbing or string-clamping device J, the latter preferably comprising the The disk 9' has ashank j threaded into a socketed portion of the arm I, the shank being hollow,- as shown, and

having a slotted portion 1' The disk 9" is wheels needle 0 and C. outward movement of the arms Hand I a cut-oif P is o erated to sever the string a provided with a shank is, loosely passing through an aperture in the disk and has at its rear end a nut k slid able withm the hollow shank 7' the inward movementthereof being limited by a pin k on aging the slot j. Mounted within the hoFlow shank j is a spring is, the opposite ends of which bear, respectively, against the disk j and said nut is, whereby the two disks are normally held together. These disks are carried by the arm I, so that when swung u ward into a osition adjacent to the need e C they will fie in proximity to the end of the strin projecting om the threading-needle G. 0 separate the disks 7' and j, a wedge-shaped stop J is arranged in the path of the grabber J adjacent the limit of the upward movement of the arm I, so positioned that when the grabber J contacts therewith the stop will be inserted between said disks. TlllS will move outward the disk j against the tension-spring k and permit the end of the string projecting from the threading-needle G to pass between the disks and upon the reverse movement of the arm I to be clamped between said disks. The arms H and I are arranged to be simultaneously swung into opposite directions, preferabl by roviding mtermeshin gear- I and IT on the rock-shafts II and actuated from the cam M through the medium of the lever L. rotary shaft N and is so fashioned that once in each rotation of said shaft the lever L and rod L will be reciprocated, thereby causin the rocking movement of the arm- I an through the intermeshing gear-wheels K and K an opposite movement of the arm H. The string threaded in the needle G is carried by the arm.H, passing through a uide thereon, which is adj acent to the axis o movement' of said arm and drawn from a supply located at any'convenient point, such as in the holder .0. Thus in'the movement of the arm H to insert the needle G throu h the eyes of the needles C and C there will e no tension upon the string but as soon as the end of the string is seized by the clamp J and is carried by the swing of the arm I the strin will be drawn through the eye of the need e G and The cam M is upon a' L is a rod connected to the arm I and I through the guide I on the arm H until the outward movement of the arms I and H is com leted. The movement of the arms H and is sufficient to draw a length of strin between the rabber J and the needle g which is suitaile for the draw-string of the bag, and this string extends substantially equal distances upon opposite sides of the At the termination of the short distance cm the needle G. As shown, this cutter comprises a pair of shears with adtuating togglelevers P, which are en- 1gauged by, a lug P on the arm.H during its al outward movement and are'actuated to sever the strin As the length of string for different sizes of bags varies, provision is preferably made for adjustin .the operation of the swinging arms H and so as to increase or diminish the amplitude of their movement. As shown, the arm I is provided with an actuating extension ,P, having a segment-slot m thereon,

through which the pivot-pins m for connecting the rod L pass. This pin is clamped to the arm I and may be adjustedto different ositions in the slotm tovary its distance om the-axis of the rock-shaft I and correspondingly vary the swing of the arm I'.

j The string is released from the grabber J at the termination of the outward movement of the arm I by means of a lug Q, similar to the lug J, which is arranged adjacent the limit of the outward movement of the arm I, in the path of the grabber, so asto separate the disks 7' and j and release the end of the string there from. -This releasing-lu Q, as; well as the severing-shears P, must e adjusted in position to correspond to the movement of the scribed to supply the string to the needles, 0

and C and sever the length from the'threading-needle G said needles 0 and C are moved forward to carry thestring through the hem or loop at the mouth of the bag. In this of the needles thestring is prevent danger o movement the outer ply of the cloth is pierced and the needle passes between plies 1n vthe manner already. described, finally piercing the outer ply'at the opposite end of During the travel the bag and passing out.

' continually drawn throu h the eyes 11, and before the needles com l ete their movement the. oppositeends of t e string aredrawn out throu h said eyes, thus disengaging from'the nee es. To

faster from one ofthe needles than from the other oppositely-dis osed spring-clamps It and it are 'pre'fera l I mounted u on the holderA in an 'suitab against the string and the shank-needles, so as to put a uniform tension thereon, j

At the end of the forwardmovement of the needles C and Cthey-are held stationary for the .string drawing out.

e manner at-t e opposite sides of t I 'bar h and arranged to bear 6 an interval, during which, the needles are again supplied with string by a second to the one already described andoperating upon the needles in the position described. As soon as this operation is complete and a length of string severed the need es'O and C are returned, thereby drawing the second threading mechanism similar in construction string through the hem or loop at the mouth of the bag, with the ends of the'string extending oppositely from those of the string first en aged. The movement .of the needles 0 and (I is effected by the reciprocation of the holder D, and the latter may be actuated by any-suitable means, such as the lever S, operated by acam T on the shaft N.' In engag ing the bag with the holder A it is drawn down over the spring-frame, and the projecte ngaged between guides Uand U, mounted upon the support F in any suitable manner above the sprin -clamps R R" and intermediate the need es, so as to hold-said edges out of the path of the needles 0 and C.

After the completion of the stringing operation the bag is automatically removed from theholder and at the same time is turned by the following mechanism: V is aj a thin blade adapted to be inserted between the furcations b and b of the holder A. This blade, as shown, is of se gmental form and is, carried by a rock-arm W on the rock-shaft ing edges of the raw edges are-preferably W, said shaft being intermittently actuated by the rock-arm W and the rod X connected thereto, which at its opposite end is connected to the lever-Y, actuated by the cam Y on the shaft N. The timing of the cam Y is such that movement is imparted to the rock-shaft W" after the completion of the stringing operation, and this will cause the arm W to carry the blade V, 'so that its forward end will be inserted between the furcations b. and bof the holder. A, (pressing the bottom of the bag downwar This movement will continue until the entire bag is drawn through between the furcations and b being by this operation reversed and .finally disenga ed from the holder. To permit the ready (Iisengagement of the bag from the holder, the tension on the spring-frame is relieved, preferably by connecting the move able arm a of said frame with the lever Z,

pivoted 'intermediate its ends to a suitable racket Z ,the lever bein actuated by a cam Z on theshaft N T is cam-groove is adapted to operateat the proper time to swing the lever Z on its pivot and move the arm a outward, the'ar'm a thereby contracting the framev A, so that the bag may freely slide thereon.

On account of the shape 'of'the bifurcated portion of the frame A, and particularly by reason of the beveled portion 0 thereof, the

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corners of the bag will not be completely turned, but will remain tucked. Thus in the operation of the blade V the threefold result is obtained of removing the bag from the holder, reversing it, and tucking the corners.

What we claim as our invention is' 1. In a bag-stringing machine, the combination with a reciprocatory stringing-needle of a threading-needle adapted to be inserted through the eye of said stringing-needle, means for enga 'ng the end of the string threaded througIf said eye and for drawing a suitable length thereof, and means for withdrawing the threading-needle and severing the length of string therefrom;

2. In a bag-stringing machine, the combination with a reciprocatory stringing-needle of athreading-needle carrying the end of a supply of string and ada ted to be inserted through the eye of sai stringing needle, means for seizing the end of the strin passed through said eye and drawin a suitabIe length thereof through said eye, an means for simultaneously withdrawing said threading-needle and retracting the same to draw therefrom a suitable length of string on the opposite side of said stringing-needle, and means for severing the drawn length of string so as to leave theend of the sup ly inengagement with said threading-needfe.

3. In a bag-stringing machine, the combination with a pair of parallel reciprocatory stringingeneedles of a threadin -needle engaging withthe end of a suppIy of string adapted to be inserted through the eyes of both of said stringing-needles, means for en-v gaging the end of the string inserted through said eyes and for drawing a suitable length thereof, and means for withdrawin said threading-needle and for severing a length of. string therefrom leaving the supply still in en agement therewith.

4. n a bag-stringing machine the combination with a reciprocatory stringing-needle of a threading-needle having engaged therewith the end of a supply of string andadapted for insertion through the eye of said stringingneedle a grabber comprising a spring-clamp, a reciprocatory arm therefor, operatin means for the arm, means for opening sai clamp when adjacent to said stringing-needle to receive the end of the strin carried by said threading-needle and for c osingthe clamp upon the initial movement of said reciprocatory arm whereby a suitable length of string is drawn through the eye of said stringing-needle, and means for again opening said clamp at the end of the outward movement of said grabber to release said drawn string.

5, In a bag-stringing machine, the combination with a reciprocatory stringing-needle of a threadin -needle en aged with the end of a supply of string an adapted for insertion through the eye of said stringing-needle,

a grabber comprising a reciprocatory mem- 6 5 ber carrying the disks j an 7" and a spring for drawing said disks to ether, the lugs J and Q' at opposite ends of t e movement of said grapper whereby the clamp is opened to receive the string from said threading-needle and to disen age therefrom after the,drawing of a length t ereof.

6. In a bag-stringing machine, the combination with a reciprocatory stringing-needle of the swinging arms H and I on opposite sides of said stringing-needle, the threadingneedle G, carried by the arm H, the stringseizing clamp carried by the arm I, means for recii procating said arms H and I oppositely to rst thread the strin throu h t e eye of said stringing-needle an then raw a length of string through said eye and from said threadingneedle, and means for severing the drawn len th.

7. In a ag-stringing machine, the combi nation with a reciprocatory stringin -needle of a pair of oppositely-moving mem ers arranged to travel in a ath transverse to the plane of movement 0 said stringing-needle,

a threading-needle carried by one of said members and adapted for insertion through the eye of said stringin -needle, a grabber carried by the other mem er adapted to seize and draw a length of string from the threading-needle, and means for adjusting the amplitude of movement of said members to vary the length of string drawn.

8. In a bag-stringing machine the combination with a reciprocatory stringing-needle of a periodically-swingin arm movlng in a plane transverse to the p ane of movement of said stringing-needle, a threading-needle carried by said arm adapted for insertion throu h the eye of said stringing needle and a gui e through which a string is passed to said threading-needle located near the axis of said swinging arm, whereby the said arm may be moved without disengaging the string from said needle.

9. In a bag-stringing-machine, the combination with a reciprocatory stringing-needle of a threading-needle adapted for insertion through the eye of said stringing-needle, and means for drawing variable lengths of string from said threading-needle.

'10. In a bag-stringing machine the combination with a reciprocatory stringin -needle of a guide over which two plies of 0 0th are drawn arranged in relation to the ath of said i the outer of two plies of cloth at an ang e and Without'piercing the same, including a curved guide over which the two plies of cloth'are 1 2. The combination with a reciprocatory stringing-needlelof a frame over which the bag 1s drawn having a rounded guide-bar at one 'ed e, ,said bar being in such relation to the pat ofsaid needle and the needlebeing so formed as to permit the latter to angularlypierce the outer ply and pass tangentially over the inner ply, and adj ustable means for guiding the point of said needle iniercing.

13. The combination with a ame over which the bag is drawn'of a reci rocatory stringing needle having a beveled point adapted to pierce the outer ply. of said bag, the angle of said bevelbeing such as to cause the sa d point to pass tangentially over the inner ply and to be laterally deflected by said frame to se' arate said plies.

14. In a ag-stringing machine, a reciprocatory stringing-needle having its forward portion of triangular cross-section and taper-,

lng, one side thereof having the bevel gto form the point, f, in combination with afirounded guide over which two plies of the bagare drawn arranged in relation to the path of said needle so,- that the outer ly will be pierced and said'beveled face ,Wi I pass tangentially over the inner ly and deflect the point of the needle latera 1y.

15. The combination with a b a -stringing needle and aframe forholding the bag during the stringing operation of means for automatically removing said bag from said holder,

' simultaneously. reversing the same.

16. The combination with a stringin -needle of a U-shaped frame over which the ag is drawn during the stringing operation, the

end of said frame being bifurcated and ablade.

adapted to be inserted between the furcations of said frame to simultaneously Withdraw the bag therefrom and reverse it.

17. ha bag-stringing machine, the combinatlon with a reciprocatory stringing-needle,

of a threading-needle adapted to thread said stringing-needle, means for engaging the end of the string after insertion through the needle-eye, and meansfor severing" the string from'thethreaded needle. 1

18. In a bag-stringing machine, the combination with a'reciprocatory stringingneedle,

of a threading-needle carrying the end of a supply of string, and adapted to be inserted through the eye of said stringing-needle, meansfor seizing the end of the string passed through said eye and drawing asuitable length thereof throu h said eye, and means for simultaneously withdrawing said th'readlng-needle and retracting the same to draw' therefrom a suitable length of string on the opposite side of said stringing-needle. 7

19. In a bag-stringingmachine, the combination with a pair of parallel reciprocatory 's tringingmeedles, of a threadin -needle ennation with a .reoiprocatory stringing-needle,

of'a threading-needle having engaged therewith the'end of'asupply of string and adapted to thread said stringing-needle, and a grabbe'r adapted to engagethe thread and Withdraw a suitable length, comprising a springu clamp a reclprocatory arm therefor.

21. In a bag-stringing machine, the combi nation with a reciprocatory stringing-needle, of a threading-needle having engagedtherewith the end of a supply of strin and adapted to thread said stringing-need e, a grab adapted to engage the thread and withdraw a suitable length, comprising a sprin eclamp and a reciprocatory arm therefor, an means for opening and closing the clamp.

22. The combination of a bag holding frame, of'a bag-stringing machine, having a bifurcated portion upon which the bottom of the bag is drawn, means for stringing the bag, and a blade adapted to be passed between the furcations of said frame to disengage the bag therefrom and simultaneously turn the bag, after said stringing operations 23. The combination of a substantially U- sha ed frame having abifurcated end ortion, said frame beingadapted to receive t e bag, means for stringing the bag, and a member adapted for insertion between the furcations of said frame to draw the bag therefrom and simultaneously reverse it, after said stringing operation.

' 24. .The combination of a U-shaped frame having a bifurcated end ortion, and adapted to have the frev'ersed ag drawn thereon, means for stringing the bag While held by sald frame, a rock-arm, and asegmental blade carried by said rock-arm ada ted in its movement to pass between the urcations ofsald frame to simultaneously draw off said bag and reverse the same after said stringing operation.

25. The combinatlon with a U-shaped frame adapted to supportthe-bag-blank,yand

means operatively associated with'said' -'sup+ ort for stringing the ba said support havmg a bifurcated end portlon with beveled corners, anda blade adapted to pass between the furcations of said frame between the beveled ortions thereof to draw off and reverse the bag, leavin the. corners tucked, said blade being opera le after said stringing operation. 26. The combination with a bagholder comprising a U-shaped frame ada ted to sup port a bag, means. associated wit said support for stringing the bag, said frame havlng a bifurcated end portion, and a blade adapted to pass between the furcations of said frame to remove and turn the bag, and means for springing the sides of said frame toward each other-during the movement of said blade to permit the ready disengagement of said bag, said blade being operable after said stringing operatlon 27. In a bag-machine, the combination vwith a reciprocatory stringing-needle, means for threadlng the needk and for clamping the threaded string, said means including op- I o positely-disposed intergear swinging arms.

In testimony whereof we aflix our signatures in presence of two Witnesses.

JAMES L. LOWE. JOHN O. HIBBARD. Witnesses:

JAs. P. BARRY, H. 0. SMITH. 

